Factorise: 6+7b-3b^2
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take common -1
-1(3b^2-7b-6)
-1(3b^2-9b+2b-6)
-1{3b(b-3) +2 (b-3)}
-1(b-3)(3b+2)
so answer can be ( 3-b)(3b+2) or (b-3)(2-3b)
-1(3b^2-7b-6)
-1(3b^2-9b+2b-6)
-1{3b(b-3) +2 (b-3)}
-1(b-3)(3b+2)
so answer can be ( 3-b)(3b+2) or (b-3)(2-3b)
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